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问题 单项选择题

关于抑制性突触后电位产生过程的描述，错误的是（）

A.突触前轴突末梢去极化

B.Ca2+由膜外进入突触前膜内

C.突触小泡释放递质，并与突触后膜受体结合

D.突触后膜对Cl-或K+的通透性升高

E.突触后膜膜电位增大，引起突触后神经元发放冲动

答案

参考答案：E

填空题

above，king，come，old，food，too，reply，another，life，see
A boy found an eagle’s(鹰) egg and he put it in the nest of a chicken. Soon the egg broke open and the eagle 小题1:            out. He thought he was a chicken. He grew up doing what chickens do—searching in the dirt for 小题2:            and flying short distances with a noisy waving of wings. It was a hard life. Little by little the eagle grew 小题3:           . One day he and his chicken friend 小题4:           . a beautiful bird flying in the air, high (小题5:          the mountains.
“Oh, I wish I could fly like that!” said the eagle. The chicken 小题6:           , “Don’t give it another thought. That’s the great eagle, the 小题7:            of all birds—you could never be like him!” And the eagle didn’t give it 小题8:            thought. He went on cackling(咯咯) and complaining(抱怨) about 小题9:          . Finally he died thinking he was a chicken.
My friends, you 小题10:            were born an eagle. The God expected you to be an eagle, so don’t listen to the chickens!
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单项选择题

甲公司支出20 万元购买了某市场预测信息，由于此信息的采纳，甲公司多得到了100 万元的利润，对甲公司公司而言，这个市场预测信息的 （35） 。

A．收益是20 万元

B．收益是80 万元

C．收益是100 万元

D．收益不能衡量
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